Class: Eco::API::UseCases::UseCaseChain

Inherits:
UseCase show all
Includes:
Chaining
Defined in:
lib/eco/api/usecases/use_case_chain.rb,
lib/eco/api/usecases/use_case_chain/chaining.rb

Overview

Class that enables to chain multiple UseCase

Defined Under Namespace

Modules: Chaining

Constant Summary

Constants included from Chaining

Chaining::MAX_CHAINS

Constants included from BaseCase::Model

BaseCase::Model::MODELS

Constants included from BaseCase::Type

BaseCase::Type::TYPES

Instance Attribute Summary

Attributes inherited from UseCase

#model, #name, #options, #times_launched, #type

Instance Method Summary collapse

Methods included from Chaining

#chain, #use

Methods inherited from UseCase

#classed_definition, #source_object

Methods included from Eco::API::UseCases::UseCase::Chainer

#chainer

Methods included from Common::ClassHelpers

#class_resolver, #descendants, #descendants?, #inheritable_attrs, #inheritable_class_vars, #inherited, #instance_variable_name, #new_class, #resolve_class, #to_constant

Constructor Details

#initialize(name = nil, root:, type: nil, model: nil, usecase: nil, &block) ⇒ UseCaseChain

Returns a new instance of UseCaseChain.



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# File 'lib/eco/api/usecases/use_case_chain.rb', line 9

def initialize(name = nil, root:, type: nil, model: nil, usecase: nil, &block)
  if usecase
    msg  = "Expected Eco::API::UseCases::UseCase. "
    msg << "Given #{usecase.class}"
    raise msg unless usecase.is_a?(Eco::API::UseCases::UseCase)

    type    = usecase.type
    name    = usecase.name
    block ||= usecase.callback
  end

  super(name, type: type, model: model, root: root, &block)

  reset_chains!
end

Instance Method Details

#launch(io: nil, **kargs) ⇒ Object

See Also:



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# File 'lib/eco/api/usecases/use_case_chain.rb', line 34

def launch(io: nil, **kargs)
  super(io: io, **kargs).tap do |uio|
    next if resolved_chains.empty?

    resolved_chains.each do |usecase|
      uio = usecase.launch(io: uio.chain(usecase: usecase))
    end
  end
end

#root=(value) ⇒ Object 



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# File 'lib/eco/api/usecases/use_case_chain.rb', line 25

def root=(value)
  return super unless @resolved_chains # rubocop:disable Lint/ReturnInVoidContext

  msg = "You cannot change root Eco::API::UseCases "
  msg << "once the chains have been resolved"
  raise msg
end